986e82396a
Pushing into the currently checked out branch of a non-bare repository can be dangerous; the HEAD then loses sync with the index and working tree, and it looks in the receiving repo as if the pushed changes have been reverted in the index (since they were never there in the first place). This patch adds a safety valve that checks for this condition and either generates a warning or denies the update. We trigger the check only on a non-bare repository, since a bare repo does not have a working tree (and in fact, pushing to the HEAD branch is a common workflow for publishing repositories). The behavior is configurable via receive.denyCurrentBranch, defaulting to "warn" so as not to break existing setups (though it may, after a deprecation period, switch to "refuse" by default). For users who know what they are doing and want to silence the warning (e.g., because they have a post-receive hook that reconciles the HEAD and working tree), they can turn off the warning by setting it to false or "ignore". Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
//////////////////////////////////////////////////////////////// GIT - the stupid content tracker //////////////////////////////////////////////////////////////// "git" can mean anything, depending on your mood. - random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant. - stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang. - "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room. - "goddamn idiotic truckload of sh*t": when it breaks Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. Git is an Open Source project covered by the GNU General Public License. It was originally written by Linus Torvalds with help of a group of hackers around the net. It is currently maintained by Junio C Hamano. Please read the file INSTALL for installation instructions. See Documentation/tutorial.txt to get started, then see Documentation/everyday.txt for a useful minimum set of commands, and "man git-commandname" for documentation of each command. CVS users may also want to read Documentation/cvs-migration.txt. Many Git online resources are accessible from http://git.or.cz/ including full documentation and Git related tools. The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org. To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at http://marc.theaimsgroup.com/?l=git and other archival sites. The messages titled "A note from the maintainer", "What's in git.git (stable)" and "What's cooking in git.git (topics)" and the discussion following them on the mailing list give a good reference for project status, development direction and remaining tasks.